Half to jacob w



(No Model.) 2 sheets sheet 1.

R. P. POSS.

SAW FILING DEVICE.

No. 599,327. Patented Feb; 22, 1898.

1/1/1 TN E 5' NTUR AM fi WW {KW 6 61% My MW A TTURNEY (No Model.) 2 Sheets-Sheet 2.

R. P. POSS. SAW FILING DEVICE.

No. 599,327. Patented Feb. 22, 1898.

INUENTUR j-ZTTURNEY lliviTnn STATES PATENT UFFlCF.

ROBERT FRANCIS FOSS, OF LAOONIA, NEYV HAMPSHIRE, ASSIGNOR OF ONE- HALF TO JACOB W. I-IADDOOK, OF SAME PLACE.

SAW-FILING DEVlCE.

SPECIFICATION forming part of Letters Patent No. 599,327, dated February 22, 1898.

Application filed June 5, 1897. serial No. 639,621. (No model.)

1'0 [LZZ whom it may concern:

Be it known that 1, ROBERT FRANCIS FOSS, a citizen of the United States, residing at Laconia, in the county of Belknap and State of New Hampshire, have invented a ne w and useful Improved Saw-FilingDevice, of which the following is a specification.

My invention relates to an improved sawfiling device in which the saw-holding clamp operates in conjunction with the adjustable reciprocating file-holding guide, and the objects of my improvements are, first, to provide a clamp which will hold the saw firmly in place at all points; second,which shall have a traverse-way or slide-bar for the guide-carriage to move on; third, which shall be easily and quickly attachable to any bench, table, or other support on which it is to be used and as readily detached therefrom when desired and which can be folded into a small compass for packing or transportation, the same to cooperate with the adjustable saw-filing guide, having lock-bolts to hold the several adjustments firmly in place during the operation of filing the saw, said adjustments being arranged, as to the required angles, according to dials, on which are numbers and marks for such purpose, a device which can be cheaply and durably made and easily operated and correctly set and reset. I attain these objects by the mechanism illustrated in the accompanying drawings, in which Figure 1 illustrates a plan or top view of my device; Fig. 2, a front view; Fig. 3, a side View; Fig. 4:, an end view; Fig. 5, a detail of handle-clamp; Fig. 6, a detail of bottom or base; Figs. 7 and 8, details of dials.

Similar letters and figures refer to similar parts throughout the several views.

A illustrates the base of the clamp part of my device, the lower part of which is made to fit onto the edge of a bench or any support to which it is to be secured for use, as shown in the drawings at a. It is secured to the bench by means of the thumb-screw b. I sometimes use only an ordinary foot or base, which can be set on any part of the top of the bench, (see 0,) in which case I secure said base to the bench by means of a bolt or thumbscrew d, which passes through the bench and screws into the base, as shown at e. To the upper part of said base A, I fit the clamp B by means of the swinging joint f and bolt g, the inner surface of said joint being rough ened in any way, so as to make the friction thereof more complete and prevent slipping when set together by the bolt 9'. Said bolt has a thumb-piece h thereon, which holds said joint in any position desired. On the upper part of B is one of the clamp-jaws, i. The other clamp-jaw, j, is hinged to part Z at m and is provided with an extension 7c. The jaws are firmly closed and locked in holding a saw by means of the thumb-screw '11. There are projections on the side of the jaw 'i, to which is attached the bar 1) by means of screws, on which bar the sawguide slides freely.

By means of the joint f the parts A and B can be folded together, thereby making the device more compact for packing or transportation.

The file-guide portion of my device is ad j ustable to any angle and at any degree required to fit any saw, (exceptacircular saw,) and consists of the handle 1, with its indeX- collar 1, for determining the angle of the file in the handle to fit the desired pitch of the tooth of the saw. Into this handle is fitted the tang 2 of the file, the point of the file being held in place by the arm 3, which is fitted on the sliding bar 4, to which it is secured in position by set-screw 5. Around said handle 1, just far enough back from the inner end of the handle to admit of a ferrule 6, fits the other arm 7, which is made to fit loosely around said handle and is slotted, as shown in Fig. 5, and provided with a set or thumb screw 8, by which it is confined (by friction) at any angle or position desirable to fix and hold the file from turning in practical use. This arm 7 is also fitted and secured to slid ing rod 4 by a set-screw 9, as shown, Fig. 1. The rod 4. is made of such length as will accommodate any length of file and slide or reciprocate through two guides 10 11, which ex tend from and on a part of the dial-plate 12. This dial-plate is marked and numbered in each direction alike from O and is adjustable from the mark on plate '13, by which the adjustment of the file to a level of a crosssection of the saw or any departure there from is determined. When regulated, it is fastened by means of screw 14. Another dial 15, integral with dial 13 and provided with indicating-marks, is adjustably connected with sliding carriage 16, which moves on bar 19, is made adjustable to plate 17 on carriage 16, and is to be permanently fixed at any desired point by set-screw 17', which is to determine the angle or shear of the tooth of the saw. It will be seen that when set to any point from one side of 0, if the dial is changed to the same number on the opposite side of 0, the file can be turned over and the saw turned end for end and the file will be set at the same angle at which it was first set and'will give to the tooth of the saw the same angle as before making the change in the saw or guide. Said sliding carriage 16 is provided with slotted lugs 18 to fit freely on bar 19, on which said carriage moves or reciprocates.

In operating my invention I first attach my device to some bench or other support by means of the set or thumb screw 1) or d. I then secure the saw to be filed within the jaws of the clamp by means of the set-screw or thumb-screw n. I then arrange the angle for the fileto run, both as to shear-angle and cross-angle, by the dials 12 and 15 and proceed to file the saw.

I claim-- In a saw-sharpening machine, the combination with the supporting-standard, of the clamping device hinged theretdand provided with the guide-bar p, carriage 16 to slide upon said bar, disk 13 pivoted to said slide, disk 12 having guides 10 and 11 and pivoted to said disk 13, and the file-carrier adapted to be slidably supported in the guides, substantially as shown and described.

ROBERT FRANCIS FOSS.

Witnesses:

H. W. BOARDMAN, MARTIN B. PLUMMER. 

